1020055 has 8 divisors (see below), whose sum is σ = 1263744. Its totient is φ = 789600.

The previous prime is 1020049. The next prime is 1020059. The reversal of 1020055 is 5500201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020055 - 2⁵ = 1020023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3136 + ... + 3445.

It is an arithmetic number, because the mean of its divisors is an integer number (157968).

2^1020055 is an apocalyptic number.

1020055 is a deficient number, since it is larger than the sum of its proper divisors (243689).

1020055 is an equidigital number, since it uses as much as digits as its factorization.

1020055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6617.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 1020055 is about 1009.9777225266. The cubic root of 1020055 is about 100.6640802127.

Adding to 1020055 its reverse (5500201), we get a palindrome (6520256).

The spelling of 1020055 in words is "one million, twenty thousand, fifty-five".